Creation Studio
A creative suite in the desktop: sheets, photos, vectors, documents and slides. Explore the suite →
Kosmos Temple Desktop
A modern desktop, written in HolyC, on TempleOS.
Windows, a dock, a browser and sixteen apps, all in HolyC, on the 640x480 operating system Terry A. Davis wrote.
Boots to the desktop in about four seconds from a saved VM image.
01 · Desktop
One screen, five styles.
Switch between macOS, Windows 11, glass and more, light or dark. Every window, icon and font is a setting, and the defaults are pixel-identical to the first build.
02 · Apps
Native apps, not demos.
Files, Notes, Calendar, Clock, a spreadsheet, a music player and a chat with animated avatars. Each one is one HolyC file.
03 · Browser
The web, painted by HolyC.
A browser whose pages are drawn by the desktop itself, with a host engine behind it for modern sites.
04 · Type
Real fonts on a 16-colour OS.
A v2 text engine draws anti-aliased Inter, Computer Modern and Liberation at any size, with a native Font Book.
0apps
0font families
0icons
0ms to drag a big window
Where this is going. An OS you can create in, with help.
AI in the OS
Agents with a seat at the desktop, under rules you set. See the plan →
It got fast on purpose.
A performance pass cut the big numbers. Flip the switch to see the before.
Measured in QEMU on Apple Silicon
Bars are scaled to the "before" value in each row. Boot compares a cold start (about 2.5 minutes of loading) with the saved VM image.
What is in the box
A few of the apps. See all of them.
Projects
A list of the Kosmos family projects, with a status and a page for each.
Files
Browses the real TempleOS drives and the Demo, Apps and Doc folders. Opens text, runs programs.
Notes
A text editor that saves to the RAM drive.
Browser
A web browser painted by HolyC, with a host engine for modern pages.
Calculator
A plain calculator in the desktop style.
Clock
World clocks, alarms, a timer and a stopwatch.
Do not just read about it.
Open windows, write a note, do a sum, or learn the language.
Boot it and look around.
Build the image, run it in QEMU, and the desktop is there in a few seconds.